我试图递归遍历登录到FTP服务器后到达的整个根目录.

我能够连接,所有我真正想要做的就是通过整个结构进行递归并下载每个文件和文件夹,并使其与FTP上的结构相同.到目前为止我所拥有的是一个有效的下载方法,它进入服务器并获取我的整个文件结构,这很棒,除非它在第一次尝试时失败,然后第二次工作.我得到的错误如下：

java.io.FileNotFoundException: output-directoryestestFile.png

(The system cannot find the path specified)

我设法上传了我在本地的目录的上传功能,但是经过多次尝试我无法完全下载工作,我真的需要一些帮助.

public static void download(String filename, String base)

{

File basedir = new File(base);

basedir.mkdirs();

try

{

FTPFile[] ftpFiles = ftpClient.listFiles();

for (FTPFile file : ftpFiles)

{

if (!file.getName().equals(".") && !file.getName().equals("..")) {

// If Dealing with a directory, change to it and call the function again

if (file.isDirectory())

{

// Change working Directory to this directory.

ftpClient.changeWorkingDirectory(file.getName());

// Recursive call to this method.

download(ftpClient.printWorkingDirectory(), base);

// Create the directory locally - in the right place

File newDir = new File (base + "/" + ftpClient.printWorkingDirectory());

newDir.mkdirs();

// Come back out to the parent level.

ftpClient.changeToParentDirectory();

}

else

{

ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);

String remoteFile1 = ftpClient.printWorkingDirectory() + "/" + file.getName();

File downloadFile1 = new File(base + "/" + ftpClient.printWorkingDirectory() + "/" + file.getName());

OutputStream outputStream1 = new BufferedOutputStream(new FileOutputStream(downloadFile1));

boolean success = ftpClient.retrieveFile(remoteFile1, outputStream1);

outputStream1.close();

}

}

}

}

catch(IOException ex)

{

System.out.println(ex);

}

}